roxanas'_andromeda_*
max:1520 min:1356. This tells you that the brightest part of this andromeda is 1520 pixels, and that the darkest is 1356 pixels.
roxanas_andromeda_-(
max:1520 min:1396. This means that if you see the brightest part of this picture the amount of pixels in that part is 1520 and the darkest part has 1396 pixels.
roxana's_andromeda_-)
max:1609 min:1256. What this tells you is that the brightest part is 1609 pixels and that the darkest part is 1256 pixels.